From d8867a8452eece3fffab29605f48e6bed47c42d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Volker=20R=C3=BCmelin?= <vr_strongswan@t-online.de>
Date: Fri, 11 Oct 2013 09:38:24 +0200
Subject: [PATCH] ikev1: Properly initialize list of fragments in case fragment
 ID is 0

Fixes CVE-2013-6076.
---
 src/libcharon/sa/ikev1/task_manager_v1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libcharon/sa/ikev1/task_manager_v1.c b/src/libcharon/sa/ikev1/task_manager_v1.c
index 6d4ef14..597416e 100644
--- a/src/libcharon/sa/ikev1/task_manager_v1.c
+++ b/src/libcharon/sa/ikev1/task_manager_v1.c
@@ -1273,7 +1273,7 @@ static status_t handle_fragment(private_task_manager_t *this, message_t *msg)
 		return FAILED;
 	}
 
-	if (this->frag.id != payload->get_id(payload))
+	if (!this->frag.list || this->frag.id != payload->get_id(payload))
 	{
 		clear_fragments(this, payload->get_id(payload));
 		this->frag.list = linked_list_create();
-- 
1.8.1.2